Ground-state wave function of a~one-dimensional weakly nonideal lattice Fermi gas
Teoretičeskaâ i matematičeskaâ fizika, Tome 47 (1981) no. 1, pp. 96-105
Voir la notice de l'article provenant de la source Math-Net.Ru
The Bogolyubov–Zubarev method of collective variab|es is used to find the ground-state wave function of a weakly nonideal one-dimensional lattice Fermi gas (in particular, the Hubbard model). The particle momentum distribution in the ground state is found in the first order in the coupling constant, and it is shown that the step in the Fermi distribution is smeared. A more realistic quasione-dimensional system is also considered and its excitation spectrum obtained.
@article{TMF_1981_47_1_a7,
author = {V. Ya. Krivnov and A. A. Ovchinnikov},
title = {Ground-state wave function of a~one-dimensional weakly nonideal lattice {Fermi} gas},
journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
pages = {96--105},
publisher = {mathdoc},
volume = {47},
number = {1},
year = {1981},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/TMF_1981_47_1_a7/}
}
TY - JOUR AU - V. Ya. Krivnov AU - A. A. Ovchinnikov TI - Ground-state wave function of a~one-dimensional weakly nonideal lattice Fermi gas JO - Teoretičeskaâ i matematičeskaâ fizika PY - 1981 SP - 96 EP - 105 VL - 47 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_1981_47_1_a7/ LA - ru ID - TMF_1981_47_1_a7 ER -
%0 Journal Article %A V. Ya. Krivnov %A A. A. Ovchinnikov %T Ground-state wave function of a~one-dimensional weakly nonideal lattice Fermi gas %J Teoretičeskaâ i matematičeskaâ fizika %D 1981 %P 96-105 %V 47 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1981_47_1_a7/ %G ru %F TMF_1981_47_1_a7
V. Ya. Krivnov; A. A. Ovchinnikov. Ground-state wave function of a~one-dimensional weakly nonideal lattice Fermi gas. Teoretičeskaâ i matematičeskaâ fizika, Tome 47 (1981) no. 1, pp. 96-105. http://geodesic.mathdoc.fr/item/TMF_1981_47_1_a7/